Bump version 1.3.0
Bump version 1.3.0

basho/riak-python-client,basho/riak-python-client,basho/riak-python-client,GabrielNicolasAvellaneda/riak-python-client,bmess/riak-python-client,bmess/riak-python-client,GabrielNicolasAvellaneda/riak-python-client